I am looking for how many days an account has to be delinquent before a bank can charge off the loan whether or not the vehicle has been repossessed. I thought it was 180 days but I am being told by some that it is 90 days.

Also, does it matter when the last payment was even if it was not enough to bring the loan less than 90 days late?

FEDERAL FINANCIAL INSTITUTIONS EXAMINATION COUNCIL
Uniform Retail Credit Classification and Account Management
Policy

Actual credit losses on individual retail credits should be
recorded when the institution becomes aware of the loss, but in no case
should the charge-off exceed the time frames stated in this policy.
This policy does not preclude an institution from adopting a more
conservative internal policy.

Closed-end retail loans that become past due 120
cumulative days and open-end retail loans that become past due 180
cumulative days from the contractual due date should be classified Loss
and charged off. In lieu of charging off the entire loan balance,
loans with non-real estate collateral may be written down to the value
of the collateral, less cost to sell, if repossession of collateral is
assured and in process.